we put a dishrack with GPUs ziptied to it in our colo and they let it go for several months, then decided it was "a fire hazard" - probably the power usage was

we put a dishrack with GPUs ziptied to it in our colo and they let it go for several months, then decided it was "a fire hazard" - probably the power usage was the issue more than anything else, if you have a cage/rack(s), what's the difference?